WiiFit depends upon a person's BMI, and BMI is one of the poorest means of measuring one's level of physical fitness. I just can't support WiiFit when it's based on such a flawed measure of a person's health.
I'm 6'2" and 202lbs and I am clearly physically fit, but the BMI says that I am overweight. According to the BMI my normal weight ranges from 144 to 194lbs. I have been attempting to gain weight for months because I'm too light. At 180lbs I was far too skinny, what the hell would I look like if I dropped another 36lbs to be at the bottom of my "normal" range? And besides looking like a skeleton, would my internal organs even function at such a light weight?
I heard that BMI is inaccurate with very fit people, and if that's the case then what the hell good is it? What's the point in creating a measurement of a person's physical fitness with the goal being to encourage people to improve their condition only to have that very measurement system fail when people become fit? And under what possible condition could a 6'2" male weigh 144lbs and be healthy and not a malnourished heroin addict? If the BMI is only accurate for obese and unfit people then I doubt they need a BMI measurement to know that they are out of shape. Their bathroom mirror surely does that.
A very handy measurement is a person's body fat percentage and most modern electronic scales have the ability to measure this so why didn't Nintendo add this technology to the balance board? Was this established technology too high tech for this last gen company? Would its functionality go against Nintendo's corporate philosophy of halfassing things? Yea, body fat percentage scales can be inaccurate, but they are very consistent when used properly. And even an inaccurate body fat percentage measurement is infinitely more useful than the utterly useless BMI measurement.